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Finding the Fourth Proportional to 228,101.20, 342,119.40 and 70,345.60

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Solution

The fourth proportional to 228,101.20, 342,119.40 and 70,345.60 is: 105,508.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,101.20 : 342,119.40 = 70,345.60 : x
  2. Step 2: Convert to fraction form
    228,101.20/342,119.40 = 70,345.60/x
  3. Step 3: Cross multiply
    228,101.20x = 342,119.40 × 70,345.60
  4. Step 4: Simplify right side
    228,101.20x = 24,066,594,464.64
  5. Step 5: Solve for x
    x = 24,066,594,464.64/228,101.20
  6. Step 6: Final answer
    x = 105,508.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.